AT396968B - Intake device on internal combustion engines - Google Patents
Intake device on internal combustion engines Download PDFInfo
- Publication number
- AT396968B AT396968B AT0009283A AT9283A AT396968B AT 396968 B AT396968 B AT 396968B AT 0009283 A AT0009283 A AT 0009283A AT 9283 A AT9283 A AT 9283A AT 396968 B AT396968 B AT 396968B
- Authority
- AT
- Austria
- Prior art keywords
- intake
- shut
- internal combustion
- inlet
- tube
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10262—Flow guides, obstructions, deflectors or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
- F02B27/0205—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the charging effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
- F02M35/10124—Ducts with special cross-sections, e.g. non-circular cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
- F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
- F02B27/0268—Valves
- F02B27/0273—Flap valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Characterised By The Charging Evacuation (AREA)
Description
AT396968BAT396968B
Die Eifindung bezieht sich auf eine Ansaugeinrichtung an Hubkolben-Brennkraftmaschinen mit einem Einlaßabsperrorgan und einem zu diesem führenden, im Zylinderkopf angeordneten Einlaßkanal je Zylinder, wobei zwei durch eine Trennwand getrennte, vor dem Einlaßabsperrorgan zusammengeführte Ansaugkanäle vorgesehen sind, deren Ladungen sich in allen Eigenschaften und Zuständen gleichen und sich in einem der beiden Ansangkanäle ein von Betriebsparametem der Brennkraftmaschine gesteuertes Absperrorgan befindet.The finding relates to an intake device on reciprocating internal combustion engines with an intake shut-off device and an intake port per cylinder leading to it, arranged in the cylinder head, two intake ports separated by a partition and brought together in front of the intake shut-off device being provided, the charges of which are in all properties and states same and there is a shut-off element controlled by operating parameters of the internal combustion engine in one of the two inlet channels.
Die Leistungsäbgäbe einer Kraftmaschine mit innerer Verbrennung bei Vollast hängt bei einer gegebenen Bauart und Größe von der Luftmenge oder Gemischmenge ab, welche je Arbeitszyklus in die Zylinder eingebracht werden kann, gleichgültig ob es sich um selbstzündende Brennverfahren (Diesel-Biennkraftmaschinen) oder Brennkraftmaschinen mit Fremdzündung handelt.The performance of a motor with internal combustion at full load for a given type and size depends on the amount of air or mixture that can be introduced into the cylinder per working cycle, regardless of whether it is self-igniting combustion processes (diesel internal combustion engines) or internal combustion engines with spark ignition .
Bei solchen Brennkraftmaschinen ist es bekannt, die Füllung der Zylinder mit Frischluft oder Gemisch sowohl bei freisaugenden als auch bei aufgeladenen Maschinen dadurch zu verbessern, daß man die durch die Kolbenbewegung erzeugte Gasbewegung im Saugrohr dazu benutzt, gegen Ende der Ansaugphase vor dem Einlaßorgan durch das Abbremsen der bewegten Gassäule eine Druckerhöhung zu erzeugen. Derartige bekannte dynamische Ansaugsysteme weisen aber den Nachteil auf, nur in einem begrenzten Bereich der Betriebsparameter, insbesondere der Drehzahl, eine Steigerung der Füllung des Brennraumes zu ermöglichen. Dabei ist überdies bei solchen Systemen zu beobachten, daß sie in angrenzenden Parameterbereichen den umgekehrten Effekt bewirken können und wiederum zu einer Verminderung des Füllgrades des Brennraumes führen.In such internal combustion engines, it is known to improve the filling of the cylinders with fresh air or mixture in both suction and supercharged machines by using the gas movement generated by the piston movement in the intake manifold to brake towards the end of the intake phase in front of the inlet element to generate a pressure increase in the moving gas column. However, such known dynamic intake systems have the disadvantage that the filling of the combustion chamber can be increased only in a limited range of operating parameters, in particular the speed. It can also be observed in such systems that they can have the reverse effect in adjacent parameter ranges and in turn lead to a reduction in the degree of filling of the combustion chamber.
In der US-PS 4,271.803 wird eine Ansaugeinrichtung an Brennkraftmaschinen der eingangs genannten Art beschrieben, bei der ein größerer und ein kleinerer Ansaugkanal unmittelbar über dem Einlaßorgan, nämlich über dem Ventilteller, enden. Aus diesem Grunde hat diese Ansaugeinrichtung den Nachteil, daß es bei einer gleichzeitigen Öffnung der beiden Kanäle zu unerwünschten Turbulenzen der Strömung des durch das Einlaßorgan hindurchtretenden Mediums kommt Falls nur der kleinere Kanal geöffnet ist, so kann sich das durch die Öffnung austretende Medium im Brennraum nicht gleichmäßig verteilen, was gleichfalls unerwünscht ist und zu einer Verschlechterung des Füllgrades führt.US Pat. No. 4,271,803 describes an intake device on internal combustion engines of the type mentioned in the introduction, in which a larger and a smaller intake duct end directly above the inlet element, namely above the valve disk. For this reason, this suction device has the disadvantage that when the two channels are opened at the same time, undesirable turbulence occurs in the flow of the medium passing through the inlet member. If only the smaller channel is open, the medium emerging through the opening cannot pass through the combustion chamber distribute evenly, which is also undesirable and leads to a deterioration in the degree of filling.
Ziel der Erfindung ist es, diese Nachteile zu vermeiden und eine Ansaugeinrichtung der eingangs genannten Art so zu verbessern, daß über den gesamten nutzbaren Betriebsbereich, insbesondere den Drehzahlbeieich, eine Erhöhung des Füllgrades des Biennraumes ermöglicht wird.The aim of the invention is to avoid these disadvantages and to improve a suction device of the type mentioned at the outset so that an increase in the degree of filling of the bee space is made possible over the entire usable operating range, in particular the speed range.
Erfindungsgemäß wir dies dadurch erreicht, daß die beiden Ansaugkanäle am Beginn des Einlaßkanals zusammengeführt sind, und daß die Trennwand zwischen den beiden Ansaugkanälen - von der Einströmöffnung in den Zylinderkopf aus gesehen - bis in jenen Bereich geführt ist, in dem die Krümmung des zum Einlaßabsperrorgan führenden Einlaßkanals beginnt. Dabei arbeiten beispielsweise im oberen Drehzahl- öder Lastbereich beide Ansaugkanäle zusammen, wogegen im unteren Bereich einer der beiden Ansaugkanäle gesperrt wird. Es ergibt sich dadurch praktisch über den gesamten Parameterbereich eine Füllungserhöhung durch das Abbremsen der die Ansaugkanäle durchströmenden Gassäule gegen Ende jeder Ansaugphase.According to the invention, this is achieved in that the two intake ducts are brought together at the beginning of the intake duct, and in that the partition between the two intake ducts - as seen from the inflow opening into the cylinder head - is guided into the region in which the curvature of the intake shut-off element leads Inlet channel begins. For example, both intake ducts work together in the upper speed or load range, whereas one of the two intake ducts is blocked in the lower range. As a result, the charge increases practically over the entire parameter range by braking the gas column flowing through the intake channels towards the end of each intake phase.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß ein die beiden Ansaugkanäle enthaltendes Rohr in Strömungsrichtung bogenförmig gekrümmt ist, was im Hinblick auf die üblicherweise gedrängte Bauweise moderner Brennkraftmaschinen Vorteile hinsichtlich des Bedarfes an zusätzlichem Bauraum für den geteilten Ansaugkanal bringtAccording to a further advantageous embodiment of the invention, it is provided that a tube containing the two intake ducts is curved in the flow direction, which brings advantages in terms of the need for additional space for the divided intake duct in view of the usually compact design of modern internal combustion engines
Bei einer Ausführungsvariante, bei der die beiden Ansaugkanäle von zwei ineinander angeordneten Rohren gebildet sind, kann es von Vorteil sein, wenn nach einer anderen Weiterbildung der Erfindung die beiden Rohre unterschiedliche Krümmungsradien und/oder Krümmungsmittelpunkte aufweisen und an zumindest einer Stelle ihres Innen- bzw. Außenumfanges miteinander verbunden sind. Dies ermöglicht eine einfache Festlegung der beiden Kanalteile relativ zueinander, bietet Vorteile beim Herstellen - beispielsweise bei gegossenen -Ansaugkanalrohren und ermöglicht in gewissen Grenzen auch eine weitere Beeinflussung der Strömung zumindest im äußeren Ansaugkanal. Die Ausführungsform, bei welcher die beiden Ansaugkanäle durch zwei im wesentlichen konzentrisch angeordnete Rohre gebildet sind, hat sich besonders bei Brennkraftmaschinen, bei denen durch konstruktive Mittel eine Rotation der Frischladung um die Zylinderachse erzwungen ist, bewährt Das innere Rohr, in welchem das Absperrorgan angeordnet ist, kann weiters, bei an der Brennkraftmaschine montierter Ansaugeinrichtung, in den Einlaßkanal hineinragen, wobei durch die letztere Maßnahme Baulänge gespart wird. Durch die konzentrische Anordnung kommt es auch bei geschlossenem Absperrorgan im inneren Rohr im niederen Drehzahlbereich nicht zu einer Strömungsablösung der durchströmenden Frischluft von der Kanalwand im Bereich des Einlaßkanaleintrittes. Eine derartige Strömungsablösung könnte zu einer Abnahme der drallerzeugenden Wirkung der üblichen Drallkanäle führen, da diese in ihrer Wirkung empfindlich in Bezug auf die Gestaltung und damit Auswirkung der stromaufwärts liegenden Bauteile sind. Die Aufrechterhaltung eines entsprechenden Dralls ist insbesondere bei Dieselbrennverfahren mit Luftrotation von großer Bedeutung; besondere beispielsweise für den Rauchwert der Abgase.In one embodiment variant, in which the two intake ducts are formed by two tubes arranged one inside the other, it can be advantageous if, according to another development of the invention, the two tubes have different radii of curvature and / or centers of curvature and at least one point on their inner or Are connected to the outer circumference. This enables the two duct parts to be fixed relative to one another, offers advantages during manufacture - for example in the case of cast suction duct pipes and, within certain limits, also enables the flow to be influenced further, at least in the outer intake duct. The embodiment in which the two intake ducts are formed by two essentially concentrically arranged tubes has proven particularly useful in internal combustion engines in which the fresh charge is forced to rotate about the cylinder axis by design means. The inner tube in which the shut-off element is arranged , can also protrude into the inlet duct when the intake device is mounted on the internal combustion engine, with the latter measure saving overall length. Due to the concentric arrangement, even when the shut-off element in the inner tube is closed, there is no flow separation of the fresh air flowing through from the duct wall in the region of the inlet duct inlet in the low speed range. Such a flow separation could lead to a decrease in the swirl-generating effect of the usual swirl ducts, since their effect is sensitive to the design and thus the effect of the upstream components. Maintaining a corresponding swirl is of great importance in particular in diesel combustion processes with air rotation; especially for the smoke value of the exhaust gases.
Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigen die Fig. 1 bis 3 schematisch verschiedene Ausführungsformen einer erfindungsgemäßen Ansaugeinrichtung.The invention will now be explained in more detail with reference to the drawing. 1 to 3 schematically show different embodiments of a suction device according to the invention.
Bei der Ausführungsform nach Fig. 1 ist ein mit dem Einlaßventil (1) des Brennraumes (2) einer nicht weiter dargestellten Brennkraftmaschine in Verbindung stehendes Rohr (3) durch eine in dessen Längsrichtung verlaufende Trennwand (4) in zwei Ansaugkanäle (5, 6) unterteilt. Diese Ansaugkanäle (5,6) vereinigen sich -2-In the embodiment according to FIG. 1, a pipe (3) connected to the inlet valve (1) of the combustion chamber (2) of an internal combustion engine (not shown in further detail) is separated into two intake ducts (5, 6) by a partition wall (4) running in the longitudinal direction thereof. divided. These intake channels (5,6) merge -2-
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0009283A AT396968B (en) | 1983-01-12 | 1983-01-12 | Intake device on internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0009283A AT396968B (en) | 1983-01-12 | 1983-01-12 | Intake device on internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA9283A ATA9283A (en) | 1993-05-15 |
AT396968B true AT396968B (en) | 1994-01-25 |
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Family Applications (1)
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AT0009283A AT396968B (en) | 1983-01-12 | 1983-01-12 | Intake device on internal combustion engines |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE718375C (en) * | 1939-02-14 | 1942-03-10 | Maybach Motroenbau G M B H | Device for the fuel mixture supply in internal combustion engines |
DE2035940B2 (en) * | 1970-07-20 | 1974-11-07 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln | Multi-cylinder injection internal combustion engine with intake swirl channels |
DE2536196A1 (en) * | 1975-08-13 | 1977-03-03 | Audi Nsu Auto Union Ag | INTAKE LINE FOR A MIX-COMPRESSING EXTERNAL IGNITION ENGINE |
DE2815701A1 (en) * | 1978-04-12 | 1979-10-25 | Daimler Benz Ag | IC engine with air or fuel mixt. heated by exhaust gas - has separate supply channels for upper and lower load regions |
GB1567811A (en) * | 1976-10-09 | 1980-05-21 | Toyo Kogyo Co | Intake system for internal combustion engines |
GB2038415A (en) * | 1978-12-28 | 1980-07-23 | Nissan Motor | Internal combustion engine fuel/air mixture supply system |
US4271803A (en) * | 1978-07-20 | 1981-06-09 | Toyota Jidosha Kogyo Kabushiki Kaisha | Internal combustion engine |
-
1983
- 1983-01-12 AT AT0009283A patent/AT396968B/en not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE718375C (en) * | 1939-02-14 | 1942-03-10 | Maybach Motroenbau G M B H | Device for the fuel mixture supply in internal combustion engines |
DE2035940B2 (en) * | 1970-07-20 | 1974-11-07 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln | Multi-cylinder injection internal combustion engine with intake swirl channels |
DE2536196A1 (en) * | 1975-08-13 | 1977-03-03 | Audi Nsu Auto Union Ag | INTAKE LINE FOR A MIX-COMPRESSING EXTERNAL IGNITION ENGINE |
GB1567811A (en) * | 1976-10-09 | 1980-05-21 | Toyo Kogyo Co | Intake system for internal combustion engines |
DE2815701A1 (en) * | 1978-04-12 | 1979-10-25 | Daimler Benz Ag | IC engine with air or fuel mixt. heated by exhaust gas - has separate supply channels for upper and lower load regions |
US4271803A (en) * | 1978-07-20 | 1981-06-09 | Toyota Jidosha Kogyo Kabushiki Kaisha | Internal combustion engine |
GB2038415A (en) * | 1978-12-28 | 1980-07-23 | Nissan Motor | Internal combustion engine fuel/air mixture supply system |
Also Published As
Publication number | Publication date |
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ATA9283A (en) | 1993-05-15 |
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UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee | ||
ELJ | Ceased due to non-payment of the annual fee |